2710M dies for metric threads are designed to be held in a suitable holder and used by hand. They have a bright finish which prevents workpiece material from sticking to the cutting surfaces of the tool so you get a clean and accurate finish, and are adjustable to achieve different fits and tolerances. 2710M UB dies are made from High Speed Steel for longer tool life and great performance, and suitable to create external threads in a variety of materials including stainless steel, cast iron, aluminum and steel.